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How to videos
Measure patio area and dig to around 150mm, deep enough to accommodate the sub-base, mortar and slab.
Step 3 - Lay the slabs
Prepare a 3:1 mortar mix with sharp sand and lay 40mm deep where the first slab will be placed. Gently set the slab into place, tapping with a rubber mallet until level and set about 15mm into the mortar. Repeat for the other slabs, putting spacers between to leave around 10mm for jointing.
Step 4 - Wet the patio
Once all slabs have been placed spray the whole patio with water and leave for at least 24 hours to set.
Step 5 - Fill gaps with jointing mix
Fill the gaps with mortar, cleaning off any excess and ensuring a smooth finish. However setting mortar in heavy rain can be an issue. Proprietary jointing mixes such as Geo-Fix All Weather have been designed to work in place of standard mortar, even if the weather turns.